Table 1.
Descriptive statistics of total scores of the Healthy Eating Index-2015 (HEI-2015) and Nutrient-Rich Food Index 9.3 (NRF9.3) in 639 Japanese adults aged 20–81 years
| Mean | sd | Minimum | Q25 | Median | Q75 | Maximum | Pearson correlation | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total diet | Breakfast | Lunch | Dinner | Snacks | ||||||||
| HEI-2015* | ||||||||||||
| Total diet | 52·1 | 7·4 | 22·1 | 47·1 | 51·3 | 56·9 | 77·2 | 1·00 | ||||
| Breakfast | 45·0 | 12·5 | 0 | 37·9 | 45·2 | 53·2 | 93·4 | 0·60 | 1·00 | |||
| Lunch | 48·9 | 9·0 | 0 | 44·4 | 49·7 | 54·4 | 73·0 | 0·56 | 0·31 | 1·00 | ||
| Dinner | 53·0 | 8·0 | 18·8 | 47·7 | 53·0 | 58·3 | 76·6 | 0·65 | 0·33 | 0·17 | 1·00 | |
| Snacks | 34·2 | 15·2 | 0 | 26·4 | 35·3 | 43·3 | 78·1 | 0·29 | 0·16 | 0·09 | 0·14 | 1·00 |
| NRF9.3† | ||||||||||||
| Total diet | 667 | 106 | 142 | 611 | 679 | 743 | 884 | 1·00 | ||||
| Breakfast | 556 | 225 | −1264 | 478 | 599 | 700 | 870 | 0·51 | 1·00 | |||
| Lunch | 598 | 149 | −45 | 509 | 619 | 704 | 890 | 0·58 | 0·18 | 1·00 | ||
| Dinner | 665 | 110 | 51 | 604 | 683 | 742 | 882 | 0·70 | 0·24 | 0·25 | 1·00 | |
| Snacks | 98 | 383 | −1948 | −28 | 123 | 351 | 799 | 0·34 | 0·16 | 0·15 | 0·17 | 1·00 |
Q25, 25th percentile; Q75, 75th percentile.
*
A maximum score is 100. A higher score indicates a higher diet quality.
†
A maximum score is 900. A higher score indicates a higher diet quality.